Hakui-gun (Loc. 3) (Miocene of Japan)

Where: Hokuriku, Japan (37.2° N, 136.7° E: paleocoordinates 39.8° N, 134.1° E)

• coordinate stated in text

When: CN4-CN5a nannofossil zone, Sekinobana Formation, Middle Miocene (16.0 - 11.6 Ma)

• CN4 to CN5a of Calcareous Nannoplankton Zone by Okada and Bukry (Kami et a!. , 1981) .

• formation-level stratigraphic resolution

Environment/lithology: conglomeratic sandstone

• Pebbly conglomerate, coarse-grained sandstone, coquina and fine to medium- grained sandstone

Size class: macrofossils

Collection methods: The described specimens are reposited at the Department of Earth Sciences, Faculty of Science, Kanazawa University.

Primary reference: H. Karasawa. 1989. Late Cenozoic Elasmobranchs from the Hokuriku district, central Japan. The Science reports of the Kanazawa University 34(1):1-57 [C. Jaramillo/C. Pimiento]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 161492: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 06.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Rotaliina
 Planorbulinacea - Cibicididae
Cibicides sp. Monfort 1808
 Discorbacea - Discorbidae
 Globigerinaceae - Globigerinidae
Globigerina sp. d'Orbigny 1826
Bivalvia
 Pectinida - Pectinoidae
Gloripallium crassivenium Yokoyama 1929 scallop
Chlamys sp. Röding 1798 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Lucinida - Lucinidae
"Lucinoma acutilineatum" = Lucinoma acutilineata
"Lucinoma acutilineatum" = Lucinoma acutilineata Conrad 1849 clam
Scaphopoda
 Dentaliida - Dentaliidae
Chondrichthyes
 Squaliformes - Squalidae
Dalatias licha dogfish shark
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Odontaspidida - Isuridae
"Isurus planus" = Oxyrhina plana
"Isurus planus" = Oxyrhina plana Agassiz 1856 mackerel shark
 Odontaspidida - Alopiidae
Alopias superciliosus Lowe 1840 thresher shark
 Myliobatiformes - Rhinopteridae
Rhinoptera sp. Cuvier 1829 cownose ray
 Hexanchiformes - Hexanchidae
"Hexanchus gigas" = Notidanus gigas
"Hexanchus gigas" = Notidanus gigas Sismonda 1857 cow shark
 Lamniformes - Otodontidae
"Carcharocles megalodon" = Otodus megalodon
"Carcharocles megalodon" = Otodus megalodon Agassiz 1843 megalodon
Two fragmental teeth specimens (KUE1677, 1642)
 Lamniformes - Lamnidae
Isurus desori, "Isurus hastalis" = Carcharodon hastalis
Isurus desori Sismonda 1849 mako shark
"Isurus hastalis" = Carcharodon hastalis Agassiz 1843 white shark
 Lamniformes - Odontaspididae
Odontaspis volax, "Eugomphodus acutissima" = Carcharias, "Eugomphodus cuspidatus" = Carcharias
Odontaspis volax sand tiger shark
"Eugomphodus acutissima" = Carcharias sand shark
"Eugomphodus cuspidatus" = Carcharias sand shark
 Carchariniformes - Carcharhinidae
Galeocerdo aduncus Agassiz 1843 tiger shark
Carcharhinus egertoni Agassiz 1843 requiem shark
Carcharhinus priscus Agassiz 1843 requiem shark
 Carchariniformes - Hemigaleidae
Hemipristis serra Agassiz 1843 ground shark
 Pristiophoriformes - Pristiophoridae
Pristiophorus sp. Bleeker 1859 saw shark
Mammalia
 Perissodactyla - Paleoparadoxiidae
Paleoparadoxia sp. Reinhart 1959 desmostylian
Echinoidea
 Spatangoida - Schizasteridae
Linthia sp. Desor 1853 heart urchin